Swift-XRT Survey of Fermi Unassociated Sources


These results are part of the Swift program to follow-up Fermi unassociated sources in an attempt to find X-ray counterparts to the unidentified gamma-ray sources. As new observations are performed, these pages will be updated in nearly real time. Please use these results as a guide and proceed with caution when using them in a publication since they are the result of an automated analysis.

When using these data and results in publications, please reference M.C. Stroh & A.D. Falcone 2013, ApJS, 207, 28; arXiv: 1305.4949 for a description of many of the analysis techniques used to reduce these data (note: a more detailed paper describing the complete data set and analysis is forthcoming). Please contact Abe Falcone and Michael Stroh at unassociated@swift.psu.edu if you have any questions about the program or the analysis, or to simply to let us know that you've made use of these data.


Caution: For completeness, sources are listed if the "detection" exceeds 3 sigma. The significances and images are shown so you can make more stringent significance cuts, if desired.

1FGL J1627.8-3204

Field

Detected Excesses

Swift-XRT image of the field for 1FGL J1627.8-3204 Swift-XRT detections in the field for 1FGL J1627.8-3204

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 16 27 57.75 -32 06 01.03 4.69 (2.1 ± 0.6) x 10-3 50 3.775 3.816
2 16 28 07.18 -32 05 47.06 4.80 (1.6 ± 0.5) x 10-3 33 3.433 3.250
3 16 27 50.11 -32 09 21.57 4.88 (1.6 ± 0.5) x 10-3 34 2.964 3.201
4 16 27 50.20 -31 55 57.70 4.83 (1.4 ± 0.5) x 10-3 31 3.009 3.001

Rejected Excesses (Due to Overlaps or SNR(Sosta) < 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 16 28 01.96 -31 57 42.82 4.74 (1.5 ± 0.5) x 10-3 32 3.296 2.994
2 16 27 02.65 -32 04 33.13 5.20 (1.2 ± 0.4) x 10-3 21 2.848 2.940
3 16 28 25.03 -32 02 13.43 4.74 (1.2 ± 0.5) x 10-3 27 2.539 2.563
4 16 27 39.89 -32 10 42.68 4.81 (8 ± 4) x 10-4 34 2.734 2.089
5 16 28 27.18 -32 01 32.08 4.83 (7 ± 4) x 10-4 25 3.117 1.870
6 16 28 38.14 -32 02 51.03 4.86 (6 ± 4) x 10-4 26 2.638 1.846
7 16 27 50.51 -32 14 19.90 4.59 (7 ± 4) x 10-4 29 2.562 1.745

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 1FGL J1627.8-3204 Swift-XRT image with known radio, optical and UV sources for 1FGL J1627.8-3204

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 CXOGSG J162750.0-320453 16 27 50.09 -32 04 53.76 0.50 CHANDRA
2 CXOGSG J162748.5-320524 16 27 48.58 -32 05 24.72 0.84 CHANDRA
3 CXOGSG J162753.2-320330 16 27 53.28 -32 03 30.96 1.51 CHANDRA
4 CXOGSG J162757.7-320555 16 27 57.79 -32 05 56.04 2.44 CHANDRA
5 CXOGSG J162800.7-320557 16 28 00.72 -32 05 57.48 2.99 CHANDRA
6 CXOGSG J162805.9-320431 16 28 05.93 -32 04 31.08 3.76 CHANDRA
7 CXOGSG J162806.9-320548 16 28 06.98 -32 05 48.84 4.17 CHANDRA
8 CXOGSG J162749.7-320902 16 27 49.78 -32 09 02.16 4.47 CHANDRA
9 CXOGSG J162744.9-320943 16 27 44.93 -32 09 43.92 5.20 CHANDRA
10 CXOGSG J162801.2-320931 16 28 01.27 -32 09 31.68 5.67 CHANDRA
11 CXOGSG J162806.9-315937 16 28 06.94 -31 59 36.96 6.35 CHANDRA
12 CXOGSG J162817.4-320137 16 28 17.47 -32 01 37.92 6.87 CHANDRA
13 CXOGSG J162817.5-320046 16 28 17.57 -32 00 46.80 7.29 CHANDRA
14 CXOGSG J162816.9-320900 16 28 16.99 -32 09 00.36 7.54 CHANDRA
15 CXOGSG J162823.9-320212 16 28 24.00 -32 02 12.48 7.95 CHANDRA
16 CXOGSG J162804.7-321142 16 28 04.75 -32 11 43.08 7.95 CHANDRA
17 CXOGSG J162827.2-320135 16 28 27.24 -32 01 35.76 8.79 CHANDRA
18 CXOGSG J162837.9-315817 16 28 37.94 -31 58 17.40 12.28 CHANDRA

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 PSR J1628-3205 16 28 07.01 -32 05 48.84 4.17 ATNFPULSAR
TGSSADR J162807.0-320554 16 28 07.10 -32 05 54.96 4.22 GMRTAS150M
2 NVSS J162808-320259 16 28 08.21 -32 02 60.00 4.52 NVSS
3 NVSS J162712-320435 16 27 12.19 -32 04 35.04 7.64 NVSS
4 NVSS J162818-315912 16 28 18.31 -31 59 12.84 8.34 NVSS
5 NVSS J162827-320201 16 28 27.00 -32 02 02.04 8.61 NVSS
6 TGSSADR J162837.1-320920 16 28 37.20 -32 09 20.16 11.42 GMRTAS150M
7 SUMSS J162818-315446 16 28 18.79 -31 54 46.08 11.77 SUMSS
8 NVSS J162826-321326 16 28 26.40 -32 13 26.04 11.99 NVSS

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